Tuna Tech: Fuel Pressure Regulators
 

I post this for people to read, discuss, criticise and make informed descisions.

Part 1 of more to come. Subject to change without notice.

Top read Stace!

Great work!!!!!

One of the best tech articles I've read.

Top effort Stace. Looks like I am off out to the shed to relocate the feed for the fuel reg to the centre of the manifold.

STACE THE MYTHBUSTER!!!!!!! :)

I can see the workshops around town cursing stace
and shares in the companies that make the regulators are losing $

One of the biggest benefit of fitting a aftermarket fuel rail claimed by the manufacturers is the GD models tend to have the problem of cylinder one running lean compare to other 3 cylinders, and the fuel rail will deliver exact the same amount of fuel to all four cylinders through the injectors thus eliminating the problem.

But it seems this problem with cylinder 1 (or cylinder 3 for GCs) is caused by incorrect readings as pointed out by Stace, so if you relocated the fuel regulator line to the centre of the manifold, you would eliminate this problem and save you alot of dole on buying the fuel rail......... good work Stace ....... I think you have way too much time on your hands :rolleyes:

One question, if the boost gauge hose runs off cylinder one on a GD and the gauge itself is accurate and fast enough to register the fluctuations in the manifold pressure, would it give the impression that your car is not holding boost?

Great article Stace!

[QUOTE=CDR RA]Looks like I am off out to the shed to relocate the feed for the fuel reg to the centre of the manifold.[/QUOTE]

Is it easy enough to do yourself? Is there already a place on the centre manifold to connect to? Or do you need a mechanic to do it?

Glen.

Very interesting read indeed, after reading that article i walked out to the carpark and lifted the bonnet to have a look at how its all wired up..

I think i know what im doing this weekend :)

Any specific size tubing?

glad people found it a good read, hope it does some good, the less blown engines the better :)

standard vacuum hose is going to do it, aslong as you get a good seal on both ends of the hose, at present ive got some blue ricey silicon hose doing mine, replacing it with black stuff as soon as i come accross the right price :)

[QUOTE=Rexilla]One question, if the boost gauge hose runs off cylinder one on a GD and the gauge itself is accurate and fast enough to register the fluctuations in the manifold pressure, would it give the impression that your car is not holding boost?[/QUOTE]

if your boost guage flutters, its usually the wastegate solinoid flapping and your boost controller isnt holding / controlling boost as well as it should.